JPS5538720A - Vtr - Google Patents

Vtr

Info

Publication number
JPS5538720A
JPS5538720A JP11093978A JP11093978A JPS5538720A JP S5538720 A JPS5538720 A JP S5538720A JP 11093978 A JP11093978 A JP 11093978A JP 11093978 A JP11093978 A JP 11093978A JP S5538720 A JPS5538720 A JP S5538720A
Authority
JP
Japan
Prior art keywords
signal
circuit
supplied
gain
reproduced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11093978A
Other languages
Japanese (ja)
Other versions
JPS6115636B2 (en
Inventor
Noriyuki Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP11093978A priority Critical patent/JPS5538720A/en
Publication of JPS5538720A publication Critical patent/JPS5538720A/en
Publication of JPS6115636B2 publication Critical patent/JPS6115636B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To secure a constant level for the color signal without causing the lateral lines by controlling the level of the color signal received the low-range conversion and contained in the reproduced signal in accordance with the amplitude of the luminance signal received the FM modulation and contained in the reproduced signal.
CONSTITUTION: Luminance signal YF which is reproduced through rotary head 1 and drawn out through high pass filter 3 is supplied to gain control circuit 12.And the gain-controlled signal YG is supplied to envelope detection circuit 14 through amplifier 13, and this detection output is supplied to the gain terminal of circuit 12 as control signal SC. Circuit 12, amplifier 13 and circuit 14 form the automatic gain control system of the closed loop. Furthermore, signal SC is supplied to the control terminal of gain control circuit 9 through correlation correction circuit 15. Thus the level of color signal CL can be made even.
COPYRIGHT: (C)1980,JPO&Japio
JP11093978A 1978-09-08 1978-09-08 Vtr Granted JPS5538720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11093978A JPS5538720A (en) 1978-09-08 1978-09-08 Vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11093978A JPS5538720A (en) 1978-09-08 1978-09-08 Vtr

Publications (2)

Publication Number Publication Date
JPS5538720A true JPS5538720A (en) 1980-03-18
JPS6115636B2 JPS6115636B2 (en) 1986-04-25

Family

ID=14548398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11093978A Granted JPS5538720A (en) 1978-09-08 1978-09-08 Vtr

Country Status (1)

Country Link
JP (1) JPS5538720A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2508841B2 (en) * 1989-05-22 1996-06-19 井関農機株式会社 Riding type seedling planter

Also Published As

Publication number Publication date
JPS6115636B2 (en) 1986-04-25

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